I haven't played the other maps in the series. This is good fun, a castle/dungeon with lots of monsters and ammo etc. Simple layout, unfussy, action-packed. Marred by a too-obvious secret near the beginning that gives you masses of health and a plasma gun. Tends to use revenants as if they were tougher. A little easy as a single level, although it would be superb as part of a megawad.